CVE-2026-33287

LiquidJS is a Shopify / GitHub Pages compatible template engine in pure JavaScript. Prior to version 10.25.1, the replacefirst filter in LiquidJS uses JavaScript's String.prototype.replace which interprets $& as a back reference to the matched substring. The filter only charges memoryLimit for th...

CVE-2026-33287 LiquidJS has Exponential Memory Amplification through its replace_first Filter $& Pattern

LiquidJS is a Shopify / GitHub Pages compatible template engine in pure JavaScript. Prior to version 10.25.1, the replacefirst filter in LiquidJS uses JavaScript's String.prototype.replace which interprets $& as a back reference to the matched substring. The filter only charges memoryLimit for th...

CVE-2026-33287

LiquidJS is a Shopify / GitHub Pages compatible template engine in pure JavaScript. Prior to version 10.25.1, the replacefirst filter in LiquidJS uses JavaScript's String.prototype.replace which interprets $& as a back reference to the matched substring. The filter only charges memoryLimit for th...

LiquidJS has Exponential Memory Amplification through its replace_first Filter $& Pattern

Summary The replacefirst filter in LiquidJS uses JavaScript's String.prototype.replace which interprets $& as a backreference to the matched substring. The filter only charges memoryLimit for the input string length, not the amplified output. An attacker can achieve exponential memory amplificati...